Mix in a bowl:

2 1/4 c. oatmeal
2 1/4 c. light brown sugar
3 tbsp. flour
1 tsp. salt

Stir in:

1 c. melted butter

Add:

1 tsp. vanilla
1 egg, slightly beaten

Blend well. In 375 degree oven on a foil lined cookie sheet, arrange cookies at least 2 inches apart. Cook until lightly brown, about 7 minutes. Cool before removing from pan